hey everybody i got a problem but do not know how to do it, A 2.0 kg frictionless cart is moving at a constant speed of 3.0m/s to the right on a horizontal surface. it then collides with a mass that is at rest. as a result the cart acquires a speed of 1.6m/s. Neglect friction.
Caluclate magnitude and direction of the velocity of the 2.0 kg cart after the collison
Calculate mass of the second cart.
Im not sure what equations i need to use so thats why i am here.
The Attempt at a Solution
No idea of how to solve please help thanks alot.